[Boost-users] [boost-users] Boost.Parameter: ArgumentPack - is type contained

Subject: [Boost-users] [boost-users] Boost.Parameter: ArgumentPack - is type contained
From: Christoph Heindl (christoph.heindl_at_[hidden])
Date: 2011-03-29 15:22:04

Hi,

I'm trying to test an ArgumentPack for containment of a certain
parameter. Since an ArgumentPack is a valid MPL Sequence, I think
boost::mpl::contains should do the trick, but I fail to specify the
correct type. Consider the following

BOOST_PARAMETER_NAME(color);

template<class Opts>
void function_with_opts(const Opts &opts)
{
  boost::mpl::contains<Opts, /* what type goes here if I'd like to
test if color is present in Opts ? */ > ));
}

Best regards,
Christoph